Efficient dynamic bandwidth allocation schemes in Long-Reach Passive Optical Networks- A survey

Usmani, Fehmida; Zaidi, Syed Sajjad Haider; Awais, Aima; Raja, M. Yasin Akhtar

doi:10.1109/honet.2014.7029357

Cited by 10 publications

(5 citation statements)

References 14 publications

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“…In [24], a comprehensive review of recently proposed DBA schemes for Long-Reach PONs is presented, with a particular emphasis on reducing the delay. Within these schemes, the authors introduce a novel approach to enhancing the Quality of Service (QoS) in LRPONs by integrating inter-and intra-ONU scheduling mechanisms.…”

Section: Related Workmentioning

confidence: 99%

A Distance-Weighted Dynamic Bandwidth Allocation Algorithm for Improved Performance in Long-Reach Passive Optical Networks for Next Generation Networks

et al. 2023

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In recent years, there has been an increasing trend towards extending the coverage of passive optical networks (PONs) over large geographical areas. Long-reach PONs (LRPONs) are capable of extending the distance covered by PONs from 20 km to 100 km, leading to cost savings in the network operation by reducing the number of central offices. They have become widely deployed due to their ability to provide high-speed, long-distance data transmission over optical fibers. In addition, the next generation of optical access networks are expected to provide high-capacity mobile and wireless backhauling over a wide coverage area. However, this extended reach also requires the design of efficient dynamic bandwidth allocation (DBA) schemes to address the performance degradation caused by the increased propagation delay in LRPONs. The DBA schemes commonly used for upstream traffic transmission in traditional PONs are not well-suited for use in LRPONs due to their inefficiency in bandwidth utilization due to the increased round-trip time (RTT) between the optical line terminal (OLT) and the optical network unit (ONU). In this study, we present an efficient DBA algorithm, the Distance-Weighted Bandwidth Allocation DWDBA Algorithm, specifically enhanced for multi-wavelength LRPONs. Our DBA algorithm utilizes a scheduling policy that assigns weight vectors to Optical Network Units (ONUs) based on their distance from the Optical Line Terminal (OLT), sorting them accordingly without penalizing any ONU due to their distance. The DWDBA takes the laser tuning time into consideration. We conducted extensive simulations to evaluate the performance of the proposed algorithm under various scenarios and compared it to the IPACT algorithm. The results of the simulations show that the proposed algorithm outperformed the IPACT algorithm in terms of bandwidth utilization and queue delay.

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Section: Related Workmentioning

confidence: 99%

A Distance-Weighted Dynamic Bandwidth Allocation Algorithm for Improved Performance in Long-Reach Passive Optical Networks for Next Generation Networks

et al. 2023

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“…Several DBA algorithms have been studied while considering one wavelength in the system [12][13][14][15][16]. McGarry et al provided a comprehensive study about throughput and delay performance of various DBAs with different combinations of grant scheduling frameworks, grant sizing and grant scheduling [13].…”

Section: A Related Workmentioning

confidence: 99%

“…McGarry et al provided a comprehensive study about throughput and delay performance of various DBAs with different combinations of grant scheduling frameworks, grant sizing and grant scheduling [13]. Usmani et al presented a brief study of different DBA schemes for long reach PONs [14]. However, they cannot be directly implemented in NG-EPON without considering the underlying requirements [17,18].…”

Section: A Related Workmentioning

confidence: 99%

High Bandwidth Utilization DWBA Algorithm for Upstream Channel in NG-EPON

Hui

Gan

et al. 2022

IEEE Access

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In this paper, an (ONU-load and RTTs)-based (OLR) dynamic wavelength and bandwidth allocation (DWBA) algorithm for upstream channel in next-generational Ethernet passive optical network (NG-EPON) is proposed. By proposing adaptive threshold grouping algorithm, the waste of bandwidth resources caused by massive guard timeslots and mismatch between assigned transmission window and frame size is reduced. By adjusting the Optical Network Unit (ONU) scheduling order, the idle time caused by Round-Trip Times (RTTs) is reduced. By proposing joint ONU grouping and RTT scheduling mechanism, load balance among wavelengths is achieved. By proposing a fair allocation scheme, the fairness of bandwidth granting for each ONU is ensured. Finally, by the simulation, the effectiveness of proposed algorithm is demonstrated. The simulation indicates that the rate of bandwidth utilization, the average package delay, the scheduling cycle and the network throughput in the system based on proposed algorithm have better performance.

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“…Such customization is, however, not possible in current OLTs' control planes, and all the tenants are compelled to settle for the DBA implemented by the Infrastructure Provider/Vendor. The impact of the different flavours of DBA on the bandwidth efficiency and latency have been studied in [32,33]. The authors in [32] have surveyed the state-of-the-art DBA algorithms for TDM Ethernet Passive Optical Network (EPON) systems.…”

Section: Time Division Multiplexing Passive Optical Network (Tdm-pon)mentioning

confidence: 99%

“…The authors in [32] have surveyed the state-of-the-art DBA algorithms for TDM Ethernet Passive Optical Network (EPON) systems. A comparison between the DBA algorithms for Long-Reach PONs has been presented in [33] reporting on pros and cons of each scheme with a focus on delay reduction and communication overhead. In addition, the channel utilization and strict delay and jitter trade-off has been addressed in [34].…”

Section: Time Division Multiplexing Passive Optical Network (Tdm-pon)mentioning

confidence: 99%

Evolution of Access Network Sharing and Its Role in 5G Networks

et al. 2019

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This paper details the evolution of access network sharing models from legacy DSL to the most recent fibre-based technology and the main challenges faced from technical and business perspectives. We first give an overview of existing access sharing models, that span physical local loop unbundling and virtual unbundled local access. We then describe different types of optical access technologies and highlight how they support network sharing. Next, we examine how the concept of SDN and network virtualization has been pivotal in enabling the idea of “true multi-tenancy”, through the use of programmability, flexible architecture and resource isolation. We give examples of recent developments of cloud central office and OLT virtualization. Finally, we provide an insight into the role that novel business models, such as blockchain and smart contract technology, could play in 5G networks. We discuss how these might evolve, to provide flexibility and dynamic operations that are needed in the data and control planes.

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Efficient dynamic bandwidth allocation schemes in Long-Reach Passive Optical Networks- A survey

Cited by 10 publications

References 14 publications

A Distance-Weighted Dynamic Bandwidth Allocation Algorithm for Improved Performance in Long-Reach Passive Optical Networks for Next Generation Networks

A Distance-Weighted Dynamic Bandwidth Allocation Algorithm for Improved Performance in Long-Reach Passive Optical Networks for Next Generation Networks

High Bandwidth Utilization DWBA Algorithm for Upstream Channel in NG-EPON

Evolution of Access Network Sharing and Its Role in 5G Networks

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